Modified drugs hit the streets and kill the sister of a federal DEA agent. This will start an investigation to find the source. Meanwhile, inside the cartel, the Chef and Călăul start following the drug modifier, going on the “chain” from the moment they are produced until they are delivered. Thus, every wheel in the complex gear of the machine that takes the drugs after they are made in Colombia and transports them to the US is disclosed, each intermediary is checked until only the culprit remains and everything leads to the judgment and the harsh punishment of the driver of the card.